DIN EN 61669:2013-08 (Draft)

FOREWORD
INTRODUCTION
Clause
1 Scope
2 Normative references
3 Terms and definitions
4 Limitations
5 General requirements
   5.1 General
   5.2 Safety requirements
   5.3 Warm-up time
   5.4 Environmental conditions
   5.5 Power supply variation
   5.6 Immunity to power and radio frequency fields
   5.7 Interface connections
6 Test signal characteristics
   6.1 Test signal
   6.2 Sound source
   6.3 Test signal level
   6.4 Test signal level indication
   6.5 Equalization
   6.6 Frequency
   6.7 Harmonic distortion
   6.8 Equipment for automatic sweep frequency
        recording
   6.9 Integrity of test signal
7 Sound measurement
   7.1 Probe microphone measurement
   7.2 Noise floor of probe microphone measurement
   7.3 Attenuation of probe microphone to external
        signals
8 Data acquisition, analysis and presentation
   8.1 General
   8.2 Output indication
   8.3 Graphical printout
9 Calibration
10 Demonstration of conformity with specifications
   and test procedures
   10.1 General
   10.2 Environmental conditions and power supply
        variation
   10.3 Immunity to power and radio frequency fields
   10.4 Test signals
   10.5 Sound measurement
11 Maximum permitted expanded uncertainty of measurements
12 Marking and instruction manual
   12.1 Marking
   12.2 Software version
   12.3 Instruction manual
Bibliography
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Defines the general requirements for test equipment designed for use in measuring the real-ear acoustical characteristics of hearing aids and describes the terminology used.